package org.csmzxy.class2333;

public class ex19 {
    public static void main(String[] args) {
        int[] arr1 = new int[3];
        arr1[0] = 1;
        arr1[2] = 3;
        System.out.println("arr1[0] = " + arr1[0]);
        System.out.println("arr1[1] = " + arr1[1]);
        System.out.println("arr1[2] = " + arr1[2]);
        System.out.println("arr1的长度是：" + arr1.length);
    }

}
